LLD - Design — Splitwise (Expense Sharing)
Splitwise wants to test a complex scenario where multiple users owe each other different amounts. Which approach best ensures the financial logic is tested correctly?
Splitwise wants to test a complex scenario where multiple users owe each other different amounts. Which approach best ensures the financial logic is tested correctly?
hard📝 Trade-off Q15 of Q15
Step-by-Step Solution
Solution:
Step 1: Understand the need for realistic test scenarios
Testing multiple users with debts simulates real app usage and catches complex bugs.Step 2: Verify calculations and final balances
Performing calculations and verifying results ensures the financial logic works end-to-end.Final Answer:
Create test cases with multiple users, set debts, perform calculations, and verify final balances -> Option DQuick Check:
Realistic multi-user tests = Accurate financial logic [OK]
Quick Trick: Test real-world scenarios with multiple users [OK]
Common Mistakes:
MISTAKES- Testing only simple cases
- Skipping automated tests
- Focusing on UI over logic
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